EVOLUTION OF CHEMICALLY-INDUCED UNSTABLE DENSITY GRADIENTS NEAR HORIZONTAL REACTIVE INTERFACES

被引:26
作者
CITRI, O
KAGAN, ML
KOSLOFF, R
AVNIR, D
机构
[1] HEBREW UNIV JERUSALEM, F HABER RES CTR MOLEC DYNAM, IL-91904 JERUSALEM, ISRAEL
[2] HEBREW UNIV JERUSALEM, DEPT ORGAN CHEM, IL-91904 JERUSALEM, ISRAEL
关键词
Chemical Reactions - Hydrodynamics - Mechanical Variables Measurement--Density;
D O I
10.1021/la00093a007
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We study the evolution of concentration and density profiles in the course of chemical reactions near horizontal interfaces. Examples include first-order reaction with a catalytic surface, second-order reaction in a double-diffusive liquid-liquid interface, gas-liquid or liquid-membrane-liquid reactions, and the irradiation of a photoactive liquid interface. Our main observation is that, quite often, the resulting density profiles indicate potentially unstable hydrodynamic configurations that may lead to mass distribution through spontaneous convections, i.e., much faster than diffusion. © 1990, American Chemical Society. All rights reserved.
引用
收藏
页码:559 / 564
页数:6
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